<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>登录成功页面</title>
</head>
<body>
    登录成功！
    <button id ="back">点击返回</button>
    <script>
        let backBtn = document.getElementById("back");
        backBtn.onclick = function(){
            window.location.href = "login_signup.html";
        }
    </script>
</body>
</html>